object  ArithmeticOpDemo{
  def main(args: Array[String]): Unit = {
    val mathScore: Int = 88
    val chineseScore: Int = 93
    val englishScore: Int = 85

    val totalScore: Int = mathScore + chineseScore + englishScore
    val avgScore: Double = totalScore.toDouble / 3

    println(s"学生总分：$totalScore 分")
    println(s"学生平均分：${"%.1f".format(avgScore)} 分")
  }
}
//第七周（动手练习1）